Explain how the human voice is produced. Describe briefly how each of the three main components of the ear is suited t its main functions. Explain briefly (i) the differences between the two main theories of the perception of pitch. (ii) why two different theories are required.

(b) Entrance to mastoid- antrum in the epitympanic recess Auditory ossicles (b) Middle and internal ear Scala vestibuli (contains perilymph) Scala tympani (contains perilymph) 581 12112212 52 Semicircela -vestibule vestibular nerve Coachleur nerve cochlea Phara mageки трах

I need a clarification of why in the 1970s David Kemp was discovering sounds in the external ear canal produced by the activity within the inner ear?

Which of the following CORRECTLY contrasts the stereocilia in the cochlea versus the stereocilia in the utricle? a). The stereocilia in the cochlea are surrounded by perilymph, whereas the stereocilia in the utricle are surrounded by endolymph. b). The stereocilia in the cochlea are surrounded by endolymph, whereas the stereocilia in the utricle are surrounded by perilymph. c). The stereocilia in the cochlea are embedded in a tectorial membrane whereas the utricle are embedded in a cupula.d). The stereocilia in the cochlea are embedded in a tectorial membrane whersas the stereocilia in the embedded in a cupula.

1. With "Threshold and Sensitivity," can you describe the "inverse" (or oppostite) relationship between these two measures? Then, if hearing and sensitivity to noise are decreasing with age, what then must happend to "theshold" with noise.  2.What is the most common and normal ahe-related change in sight over time? What typically happens with aging to some important features of the eye that cuse this condition?

Compare and contrast the structures and functions of parts of the ear that function in hearing with those that function in equilibrium.